pxt-calliope/docs/reference/serial/write-line.md
2016-04-15 16:36:31 -07:00

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# Write Line
Writes a string and a new line character (`\r\n`) to [serial](/device/serial).
```sig
serial.writeLine("");
```
### Example: streaming data
The following example constantly checks the [compass heading](/reference/input/compass-heading) and sends the direction to serial.
```blocks
basic.forever(() => {
let heading = input.compassHeading()
if (heading < 45) {
serial.writeLine("N");
} else if (heading < 135) {
serial.writeLine("E");
}
else if (heading < 225) {
serial.writeLine("S");
}
else {
serial.writeLine("W");
}
})
```
### See also
[serial](/device/serial), [write value](/reference/serial/write-value)